package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Permission;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * @author ：lintao
 * @date ：Created in 2020/12/6
 * @description ：
 * @version: 1.0
 */
@Service
@Transactional
public class PermissionServiceImpl implements PermissionService {

    @Autowired
    private PermissionDao permissionDao;

    @Override
    public PageResult findPage(QueryPageBean queryPageBean) {
        PageHelper.startPage(queryPageBean.getCurrentPage(),queryPageBean.getPageSize());
        Page<Permission> page = permissionDao.selectByCondition(queryPageBean.getQueryString());
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public void add(Permission permission) {
        permissionDao.add(permission);
    }

    @Override
    public Permission findById(Integer id) {
        return permissionDao.findById(id);
    }

    @Override
    public void edit(Permission permission) {
        permissionDao.edit(permission);
    }

    @Override
    public void delete(Integer id) {
        // 查看该权限是否被角色关联
        Integer count = permissionDao.findCountByPermissionId(id);
        if (count > 0){
            throw new RuntimeException("该权限有角色关联，不能删除");
        }
        permissionDao.delete(id);
    }

    @Override
    public List<Permission> findAll() {
        return permissionDao.findAll();
    }
}
